Plant Responses
when a plant grows towards or away from a stimulus
tropism
The four most important plant hormones
auxins, cytokinins, abscisic acid, ethylene
Day neutral plants are dependent on this
temperature
A ferns reproductive structure
sori
These attract pollinators
petals
Tropisms responses are easiest to observe in these types of plants
vines
Along with auxins, these hormones control the height and shape of a plant
cytokinins
Poinsettias are an example of this ____ - day plant
Short-day plant
What is a fruit?
a swollen ovary
The female part of the plant
carpel
Type of gravitropism demonstrated by roots
positive gravitropism
This hormone prevents seeds from sprouting prematurely
abscisic acid
This type of day plant blooms blooms during the summer
long-day plants
produces pollen in gymnosperms
Out of these: carpel, stamen, egg, fruit, cones, pollen
Which two do both gymnosperms and angiosperms have?
egg and pollen
Tropism and type of tropism of a plant that bends away from the touch of a neighboring plant.
negative thigmotropism
Hormone that causes cells to enlarge, bending the stem towards the light
auxins
Name a day - neutral plant discussed in the powerpoint
tomato, cucumber, strawberry
nonvascular plants and seedless vascular plants
what structure produces pollen in angiosperms and what structure produces pollen in gymnosperms
angiosperms: stamen/ anther
Gymnosperms: cones
One of the three common tropisms that would not be present on a space shuttle
gravitropism/ gravity
As it's leaves fall, a tree loses too much sap. What hormone is the tree lacking?
Ethylene
Name a long-day plant discussed in our powerpoint
poppies, lettuce, potatoes
The fertilized egg develops into this
An embryo
The ovary contains one or more of these
ovules